Lawinenlagebericht

Kootenay Boundary

Dec 20 – 21, 2025Avalanche Canada
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Archiviert · abgelaufen 9 months ago

Lawinengefahr

Mon
Tue
Hochgebirge
3 · Erheblich
Waldgrenze
3 · Erheblich
Unterhalb
2 · Mässig

Kernpunkte

Up to 60 cm of recent snow and strong southwest winds continue to form wind slabs reactive to human triggers.

Make conservative terrain choices and avoid overhead hazard.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    1–2.5

    Up to 60 cm of recent snow and strong southwest winds continue to form wind slabs reactive to human triggers.

Confidence

Moderate

  • Uncertainty is due to the limited number of field observations.

Avalanche Summary

No new avalanches were reported on Thursday.

On Wednesday, numerous explosive triggered storm slab avalanches up to size 2 were reported at all elevations on a variety of aspects.

Snowpack Summary

40 to 60 cm of recent snow and strong southwest winds have formed slabs overlying a two to five cm thick crust.

The mid and lower snowpack is well settled with a series of crusts.

Weather Summary

Friday Night
Cloudy with flurries. 5 to 10 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -9 °C. Freezing level valley bottom.

Saturday
Cloudy with isolated flurries. 0 to 5 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -9 °C. Freezing level valley bottom.

Sunday
Cloudy with isolated flurries. 3 to 5 cm of snow. 30 km/h south ridgetop wind. Treeline temperature -6 °C. Freezing level valley bottom.

Monday
Mostly cloudy with flurries. 5 to 10 cm of snow. 40 km/h south ridgetop wind. Treeline temperature -6 °C. Freezing level valley bottom.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Make conservative terrain choices and avoid overhead hazard.
  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Keep your guard up at all elevations. Wind slab formation has been extensive and could extend into openings below treeline.
  • Closely monitor how the new snow is bonding to the crust.

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